104 MASS. EXPERIMENT STATION BULLETIN 388 



PUBLICATIONS 

 Bulletins 



378 Annual Report for the Fiscal Year Ending November 30, 1940. 112 pp. 

 February 1941. 



The main purpose of this report is to provide an opportunity for pre- 

 senting in published form, recent results from experimentation in fields 

 or on projects where progress has not been such as to justify the general 

 and definite conclusions necessary to meet the requirements of bulletin 

 or journal. 



379 Trace Metals and Total Nutrients in Human and Cattle Foods. By E. B. 

 Holland and W. S. Ritchie. 31 pp. July 1941. 



This information concerning the composition of various plant materials 

 is provided because of the very general interest in the nutritional function 

 of certain trace elements. 



380 Pasture Culture in Massachusetts. B\- William G. Colby. 44 pp. Octo- 

 ber 1941. 



Pastures are of great economic importance in Massachusetts agriculture, 

 and this study represents an attempt to organize such available informa- 

 tion as may have a bearing on their best management. 



381 Spraying to Control Preharvest Drop of Apples. By Laurence Southwick 

 and J. K. Shaw. 16 pp. February 1941. 



The use of "hormone sprays" to reduce preharvest drop is a new de- 

 velopment. This bulletin reports results of recently conducted tests in 

 an attempt to e\aluate the method, especially in relation to Mcintosh. 



382 The Propagation of Some Trees and Shrubs by Cuttings. By William L. 

 Doran. 56 pp. March 1941. 



The detailed information regarding recent developments in plant propa- 

 gation dealt with in this bulletin should be of significant economic impor- 

 tance, especially to nurserymen and foresters. 



383 The Sanitary Evaluation of Private Water Supplies. By Ralph L. France. 

 11 pp. March 1941. 



A safe water supply for rural homes is of prin;e importance. This is an 

 explanation of some of the problems involved, with special attention to 

 contamination and its detection. 



384 The Importance of Length of Incubation Period in Rhode Island Reds. 

 By F. A. Hays. 12 pp. July 1941. 



This represents an attempt to determine whether length of incubation 

 period may serve as a criterion of the future performance of chicks. 



385 Natural Land Types of Massachusetts and Their Use. B\- A. B. Beau- 



mont. 16 pp. May 1941. 



This represents an attempt to supply certain technical information 

 regarding soils considered essential as a basis for sound land-use studies 

 and classifications. 



386 Rural Youth in Massachusetts. By Gilbert Meldrum and Ruth E. Sher- 

 burne. 8 pp. December 1941. 



National concern regarding the general welfare of our population deserves 

 some planning, fcr which studies of this sort may furnish a basis. 



387 Interrelationship of Land Uses in Rural Massachusetts. By David Roz- 

 man. 20 pp. December 1941. 



The extent and significance of the various land uses and their relation- 

 ship to each other is analyzed with a view to providing a balanced system 

 of land utilization. 



